Energy stored in a capacitor is given by
Correct answer: A. E = ½ cv2
- A. E = ½ cv2
- B. E.2cv2
- C. E.cv2
- D. None of these
Explanation
The energy stored in a capacitor can be expressed in three ways: E=((CV)2)/2 where Q is the charge, V is the voltage, and C is the capacitance of the capacitor. The energy is in joules for a charge in coulombs, voltage in volts, and capacitance in farads.
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About Capacitors
Capacitors store electric charge and energy in an electric field between conductors. Work includes capacitance, the relation Q = CV, dielectric materials, charging and discharging, energy formulas, and combinations of capacitors in series and parallel. Electric potential difference is needed to understand why charge and stored energy change.
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